21.2.1 Packet Tracer – Troubleshoot WLAN Issues (Answers)

21.2.1 Packet Tracer – Troubleshoot WLAN Issues (Answers)


21.2.1 Packet Tracer - Troubleshoot WLAN Issues

21.2.1 Packet Tracer – Troubleshoot WLAN Issues

Addressing Table

Device Interface IP Address
Home Wireless Router Internet DHCP
R1 G0/0/0.10
SW1 VLAN 200
WLC-1 Management
Admin PC NIC
Web Server NIC
DNS Server NIC
Home Admin NIC DHCP
Laptop1 Wireless0 DHCP
Laptop2 Wireless0 DHCP
Tablet PC Wireless0 DHCP
Smartphone Wireless0 DHCP

WLAN Information

WLAN SSID Authentication Username Password
Home Network HomeSSID WPA2-Personal N/A Cisco123
WLAN VLAN10 SSID-10 WPA-2 PSK/Personal N/A Cisco123
WLAN VLAN 20 SSID-20 WPA-2 802.1x/Enterprise user2 user2Pass


In this activity, you will troubleshoot various issues in home wireless and enterprise wireless networks.

  • Troubleshoot wireless LAN connectivity issues in a home network.
  • Troubleshoot wireless LAN connectivity issues in an enterprise network.

Background / Scenario

Now that you have learned how to configure wireless in home and enterprise networks, you need to learn how to troubleshoot in both wireless environments. Your goal is to enable connectivity between hosts on the networks to the web server by both IP address and URL. Connectivity between the home and enterprise networks is not required.

To access the Home Wireless Router, the username and password is admin.

The WLC management interface username is admin and the password is Cisco123.


Part 1: Troubleshoot the Network

Note: You will only be troubleshooting the Home Wireless Router, WLC and wireless host devices in this activity.

Step 1: Test connectivity.

a. Test connectivity between the various wireless hosts and the web server by both IP and URL www.netacad.pt.

b. Record the hosts that cannot access the web server in the table in Step 2.

Step 2: Investigate issues and record findings.

a. Investigate the connectivity issues with each host. Issues may be with the host configuration, or with other wireless network components.

b. Complete the table.


Device Network
Issue Remedy
Smartphone, Tablet PC, Laptop Home Unable to access URL of server by name. The DNS server address misconfigured on Home Wireless Router DHCP server. Change static address of the DNS server in the Home Wireless router DHCP server to
Tablet PC Home Client set to static addressing Should be set to DHCP.
Wireless router Home Internet interface is set to static. Set internet interface to DHCP
WLC Enterprise WLAN Wireless VLAN 20 is not enabled. Enable WLAN and apply.
Laptop 2 Enterprise Laptop 2 won’t connect to Wireless VLAN 20. Incorrect username in client profile. Change username to user2.
WLC Enterprise Laptop 1 cannot connect to the WLAN. On the WLC, WLAN-Wireless VLAN 10 has Authentication Key Management set to 802.1x rather than PSK, which is the configuration required for WPA2 PSK security. Change Authentication Key Management to PSK, enter the PSK value from the WLAN table.

Part 2: Fix Issues

Make changes to the device configurations so hosts can achieve connectivity with the network. Test to ensure all hosts can reach the communication goal of connecting to the web server by both IP address and URL.

Download 21.2.1 Packet Tracer – Troubleshoot WLAN Issues .PDF file:

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